Dinverter
A
User Guide
Issue code: d2au9
88
9
Security
9.1
Introduction to the security system
Refer to this chapter only if you require the Menu 0 parameters to be
protected against unauthorized or inadvertant adjustment.
The security system has the following two levels:
•
Standard security
•
User security
Features of the security system
Unlocked
and locked
Security has two states:
locked
and
unlocked
.
When User security has been set up, both security levels are automatically
locked when the
AC
supply is disconnected from the Drive (ie. when the
AC
supply is connected, security is already locked), or when locking code
800
is
entered in parameter
0.00
.
Each security level is unlocked independently of the other by the user
entering an appropriate security code number in parameter
0.00
.
When security is
unlocked
, parameters can be
accessed
, which means the
parameter numbers can be displayed; the values can be read and, if
appropriate, changed. When security is
locked
, access to parameters is
limited to an extent determined by the security level that applies at
the time.
Standard
security
Standard security always operates and can be unlocked by the user
entering the number
149
in parameter
0.00
.
User
security
User security operates only after it has been set up by the user entering a
suitable three-digit user-security code number in parameter
B.30
; the
Drive is supplied with no user-security code. User security is unlocked by
the user entering the same code in parameter
0.00
.
